69138140

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{13451}}^1$

素因数の和:13717

約数の個数: 24

約数和(自身を含む): 145765872

約数和(自身を除く): 76627732

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 13451, 26902, 53804, 67255, 134510, 269020, 3456907, 6913814, 13827628, 17284535, 34569070, 69138140]

約数ペア:

[(1, 69138140), (2, 34569070), (4, 17284535), (5, 13827628), (10, 6913814), (20, 3456907), (257, 269020), (514, 134510), (1028, 67255), (1285, 53804), (2570, 26902), (5140, 13451)]